<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body {

        }

        div {
            width: 300px;
            height: 300px;
            background-image: linear-gradient(
                    yellow,
                    orange,
                    skyblue,
                    pink,
                    ivory
            );
        }
    </style>
</head>
<body>
<div>

</div>
</body>
</html>